I'd probably go with a cotton/acrylic blend if I could. Cotton is harder to knit with because it doesn't have any give while knitting, but once it's made it can stretch out till you rewash it. Acrylic can get hot because it doesn't breathe. The blend doesn't seem to have as much of those problems. If you want to buy in a store like Michaels look for something like Cotton-ease.

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Jan

When asking questions ALWAYS post the name and a link for the pattern if you have it.